Which of the following complex ions has the smallest d-orbital splitting energy? A) [CoCl₄]²^- B) [CoCl₆]⁴^- C) [Co(NH₃)₆]²⁺ D) [Co(OH₂)₆]²⁺ E) [Co(CN)₆]⁴^-

Question

Quizplus · Accepted Answer

The d-orbital splitting energy in a complex ion is influenced by the ligand field strength, which is determined by the ligands surrounding the metal ion. Ligands that are weak field (such as Cl-) cause smaller d-orbital splitting compared to strong field ligands (such as CN-). Among the given options, [CoCl4]2- has Cl- as the ligand, which is a weak field ligand, leading to the smallest d-orbital splitting energy.

Which of the Following Complex Ions Has the Smallest D-Orbital